package Demo01;

public class zhengze10 {
    public static void main(String[] args) throws Exception{
        String str = "yU*()#$@^&JKWUJoHFIA*()oADWF*@!%t^&#F(#$%W^k&OW";
        String regex = "[^a-z]";
        System.out.println(str.replaceAll(regex, ""));
    }
}
